Envelop.



Y W. F. HAMMEL.

ENVELOP. APPLICATION FILED DEC. 13. ms.

11. 28, lfio Patented June 19, 1917. J

I of the back of the envelop;

unrrnn snares PATENT carton I NEOSTYLE ENVELOPE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

nnvnror,

Specification of Letters Patent. Patented June 19, 1911?,

. Application filed December 13, 1913. Serial No. 806,435.

macaw.

Figs. 5 and 6 are respectively a back view of the completed article, and a sectional view thereof with an inclosure therein.

Referring first to Fig. 1' of the drawing, it will be noted that the envelop herein illustrated' is distinctly of the high-back type, and comprises the customary portions, viz.: a front, A, a back, B, side or end flaps, C-D, and atop or sealing flap, E.

To all whom it may concern:

Be it known that I, WALTER F. HAMMEL, a citizen of the United States, and a resident of Chicago, in the State of Illinois, have invented certain newand useful Improvements in Envelops, of which the following is a specification.

My present invention relates in general to envelops, and more particularly to envelops of the type known as pennysavers wherein there is a portion which may be opened by the postal authorities for the inspection of the contents thereof or for the removal of such contents for such inspection, and has special reference to improvements in envelops of the character referred to in which the so-called loose portion or flap is normally engaged and held from opening out by another portion of the structure or by the relative disposition of the parts. The principal objects of my present invention are the provision in an envelop of the type referred to of improved means whereby the loose flap is normally retained in predetermined closed position by means the provision of a cooperative hook and slot on said flap and back in aid of such purpose; the provision of an envelop of the class referred to characterized by the availability of the entire back of the structure for engagement by the sealing flap folded rearwardly from the front portion thereof, whereby the finished structure is greatly strengthened, and this without danger; of accidental engagement of the loose flap by such sealing flap, togetherwith such other objects as may be hereinafter disclosed.

In gaining the foregoing objects and certain additional benefits and advantages, which will herein below appear, I have provided a structure, one embodiment of which is illustrated in the accompanying drawing, wherein- Figure 1 is a diagrammatic view of blank from which is made an envelop embodying a preferred form ofmy present invention, the dotted lines representing the creases formed in folding the blank in the course of the manufacture of the article;

Figs. 2, 3 and 4 are similar views showing the consecutive steps of folding in such manufacture; and

vided on the back, B, a supplemental portion,- F, which I will term the back-fold, and where desirable I employ in connection therewith one or more elongated slotted apertures G, G, adapted for the reception of upward projections H, H, preferably hook shaped, formed on the flaps, G, D.

In the manufacture of the envelop, folds are consecutively made on the lines j, is and m in the customary manner, such steps being illustrated in Figs. 2 and 3 respectively, whereupon the projections H, H, are introduced into the openings G, (see Fig. 3), and the flap'F folded over inwardly along the line p, thus producing the arrangement shown in Fig.

On examination of Fig. 4: it will be apparent that the end, flaps C, D, are substantially covered by the back B and embraced closely between F, which holds them securely in position. As it is of importance that the flaps C and D be left unconnected, they are preferably back B.

The sealing flap E is shown as provided with the customary adhesive portion, which may be provided thereon throughout the usual full portion of its length as indicated by the stippling z and scaled down against the back B, without danger of unintentionally securing the end flaps C, D, against opening, in view of the extreme width of the back B and the manner in which it cov ers the end flaps C, D.

Ordinarily, I prefer to omit the projection H on one of the flaps, such as the flap C, and likewise the corresponding aperture G, and in such cases preferably cause such fla to adhere to the back B by means of an adiiesive applied to a portion of the flap, as indicated by the stippling at at, such flap C then becoming a closed flap but the flap D remains an open flap.

In carrying out my invention I have pro-- it and the back fold.

of less total length than the length of the tit? Those skilled in the art to which my invention pertains will appreciate that while the cooperating hooks and openings HH, GGr, are highly advantageous, for certain purposes one or both may be omit-, ted, that the adhesive in may be applied indilferently to the flap C or to the flap D, or to an opposite portion of the back, and that aside from the penny-saver features of my improved envelop which afi'ord a maximum of strength, the most desirable appearance, and the minimum of difliculties in manufacture, articles may be inserted into such envelop with the greatest of facility mum of loss of time either from accidental derangement of the folds or from catching or other interference by such folds or with such insertions or inclosures.

I am aware that it has heretofore been proposed to form an envelop having a front portion A provided with a'flap E and a back portion B provided with a flap F and likewise overlapping flaps C and D, such latter flaps, being caused to adhere together and being caused to adhere to both of C and l), and also that it has heretofore been proposed to form an interlocking engagement between the flap E and a slot in one of the flaps C, 'D, and consequently the structures referred to are not intended to be included within the scope of my claims.

On viewing Fig. 4 of the drawing it will be observed that the line of folding between the back portion B and the flap renders such back portion of a height less than the height of the front portion A, which permits the projections HH to protrude through the apertures GG without bending such projections, and is furthermore advantageous in this that it provides a lock adjacent each corner of the envelop between said back and end portions, when the envelop is in its normal fiat condition This structure is notv only advantageous in the points thus defined, but has this further advantage that on bending the envelop in the customary manner to facilitate the insertion of a finger to withdraw the flap U such bending causes the disengagement of the hook H with the aperture G and thus permits ready pulling out of the flap G without tearing or bending the projection or enlargement of theaperture G, I

Having thus described my invention and illustrated its use, what I claim as new and desire to secure by Letters Patent is:

1. An envelop having front and back porsaid flaps tions, and an endportion interposed be tween said front and back portions, the back portion being provided with a locking flap folded inwardly toward the front portion and against the back, whereby the end portion is embraced between said back and flap,

and despatch and with a mini-' the locking flap and end portions being pro vidcd respectively with a cooperating aperture and projection whereby they may be brought into engagement. 7

2. An envelop having front and back portions and an end portion, the back portion being provided with a locking flap folded inwardly toward the front portion and against the back whereby the end portion is embraced between said back and flap, the locking flap and end portions having 00- operating aperture and projection engagement, and the front being provided with a sealing flap having an adhesive for engaging the back of the envelop, and covering said aperture and projection engagement.

3. An envelop having front and back portions and an end ortion, the back portions being provided with a locking flap folded inwardly toward the front portion and against the back whereby the end portion is embraced between said back and flap, the locking flap and end portions having cooperating aperture and projection engagement, and the front being provided with a sealing flap having an adhesive for engaging the back portion only, the end portion being left free from adhesive engagement with any part of the envelop, whereby it may readily be withdrawn.

4. An envelop having front and back portions and a pair of oppositely disposed end portions, the back being provided with a locking flap folded inwardly toward the front portion and against the back, whereby one of the end portions is embraced between said back and flap, said locking flap and one of said end portions having cooperatmg aperture and projection engagement, said back being also provided with an adhesive engagement with one of said end portions, the other end portion being left free to be pulled out.

An envelop having front and back portions and a pair of oppositely disposed end portions, the back being provided with a locking flap folded inwardly toward the front portion and against the back, whereby one of the end portions is embraced between aid back and flap, said locking flap and one said end portions having cooperating a; erture and projection engagement, the f ont being provided with a sealing flap having an adhesive for engagement with said back portion only, one of the end portions being left free from adhesive engagement so that it may be pulled out, 1

6. An envelop having front and back portions, and an end portion having a marginal projection, the back portion being provided with a supplemental portion having a marginal aperture for engagement with said projection, and a retaining flap engageable with the-back and disconnected from said end portion V with a sealing flap memes 7. An envelop having front and back portions, and an end portion having a marginal projection, the back portion being provided with a supplemental portion having a marginal aperture for engagement with said rojeotion, and the front being provided having an adhesive for engaging the back of the envelop and covering said aperture and projection engagement and free from connection with sai endportion.

8. An envelop having front and back portions, and an end portion having a pro ection, a locking flap provided with an aperture for engagement with said projection, and the front being provided with a sealing flap arranged at substantially a right angle to said end portion and having an adhesive for engaging the back portion only and covering said aperture and projection engagement, the end portion being left free from adhesive engagement so that it may be withdrawn.

9. An envelop having front and back porpair of oppositely disposed end projection, the back flap apertured adjations, and a portions one having a being provided with a cent its line of fold for engagement wit said projection, and said back being provided with an adhesive for engagement wit one of said end portions, the other end portion being left free and unconnected with the back whereby it may be freely withdrawn.

10. An envelop having front and back portions and an end portion having a marginal projection, the back portion being provided with a flap folded inwardly toward the fnont portion and folded against the back and apertured along the line of the last mentioned fold for engagement with said marginal projection of the end portion.

11. An envelop having front and back portions and an end portion provided with a marginal projection, the back portion being provided with a flap apertured for engagement with said pro ection, said flap being folded inwardly toward the front portion and against the back, and with an aperture for engaging said projection, whereby said back and end portions are locked together adjacent one of the edges of the envelop, and vided with a flap engaging with said back portion only and covering the locking point between said back and end portions.

12. An envelop having front and back portions and a short end portion provided with a marginal projection the back portion being provided with a flap apertured for engagement with said projection, said flap being folded inwardly toward the front portion and folded against the back, and with an aperture disposed away from said first mentioned line of fold for engaging said said front portion being pr 0.

gagement with said pro ection, said flap being folded inwardly toward the front portion and folded against the back and with an aperture disposed away from said first Inentioned line of fold for engaging said projection, whereby said back and end portions are locked together adjacent one of the margins of the envelop, and said front portion being provided with a flap engaging with said back portion only and covering the locking point between sai. back and end portions.

14. An envelop having front and back portions and an end portion provided with a hook, the back portion being folded inwardly to present a surface of less height than the height of said front portion, said back portion being provided with a flap apertured along the line of fold .and having an engagement with said back ortion, whereby engagement between the Eooked and apertured portions may be efiected without bending the hook, and the point of engagement between the back and end portions is covered by a flap on the front portion, b said end portion may be withdrawn on bending the envelop.

15. An envelop having front and 7 back portions and an end portion provided at its upper being folded inwardly to embrace said en port on and to present a surface of less height than the height of said front portion, said back portion having an elongated aperture adjacent the line of fold of said back portion to receive said hook, whereby the structureis rendered expansible, and whereby said engagement between the back and end portion is is left free to be withdrawn.

16. An envelop having a front and a back, said back comprising two end flaps lying against the front, a bottom flap lying against the outer surfaces of the end flaps, and a top or sealing flap lying against the outer surfaces of all of the other flaps, one of the end-flaps being permanently united to the bottom flap and the other of said end flaps being loose and provided on one of its edges with a tongue, and some part of the envelop being provided with an aperture located in position to receive said tongue and through which said tongue projects.

4 17. An envelop having a front and a back, said back comprising two end flaps lying against the front, abottom flap lying against the outer faces of the end flaps and sealing flap adapted to overlap and lie a top or edge with a hook, the back portion covered, but said end portion against the outer surface of the bottom flap, that portion of the sealing flap which overlaps the bottom flap being provided with gum for securing it thereto when the en- 5 velop is closed and sealed, the bottom flap being permanently secured to one of the end flaps and the other end flap being left loose and free to be withdrawn from its closed position, the loose flap being provided at its 10 top edge with a tongue or projection and meosee some part of the envelop being provided with an aperture located in position to receive said tongue or projectio In testimony whereof I have hereunto signed my name in the presence of the two 1 subscribed witnesses.

WALTER F. HAEL. Witnesses:

PAUL CARPENTER,

TEA WnsTMAN. 

